Added partial GTK3 support

Converted the OSRExternalPumpBrowser demo to GTK3
Converted the TinyBrowser demo to GTK3
Converted the TinyBrowser2 demo to GTK3
Moved all Lazarus demos for Linux to the Lazarus_Linux_GTK2 directory
Fixed the Copy.CEF.DLLs tool thanks to fraurino

demos/Lazarus_Linux_GTK2/ExternalPumpBrowser/ExternalPumpBrowser.lpi

@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <CONFIG>
   <ProjectOptions>
-    <Version Value="11"/>
+    <Version Value="12"/>
     <General>
+      <Flags>
+        <CompatibilityMode Value="True"/>
+      </Flags>
       <SessionStorage Value="InProjectDir"/>
-      <MainUnit Value="0"/>
       <Title Value="External Pump Browser"/>
       <Scaled Value="True"/>
       <ResourceType Value="res"/>
@@ -23,7 +25,6 @@
     </PublishOptions>
     <RunParams>
       <FormatVersion Value="2"/>
-      <Modes Count="0"/>
     </RunParams>
     <RequiredPackages Count="2">
       <Item1>

demos/Lazarus_Linux_GTK2/ExternalPumpBrowser/uExternalPumpBrowser.lfm

@@ -10,7 +10,7 @@ object Form1: TForm1
   OnCloseQuery = FormCloseQuery
   OnCreate = FormCreate
   Position = poScreenCenter
-  LCLVersion = '2.0.12.0'
+  LCLVersion = '2.2.2.0'
   object AddressPnl: TPanel
     Left = 0
     Height = 23

demos/Lazarus_Linux_GTK2/ExternalPumpBrowser/uExternalPumpBrowser.pas

@@ -98,6 +98,12 @@ implementation
 
 {$R *.lfm}
 
+// ATTENTION
+// =========
+// Since CEF 102 the Linux demos with the GlobalCEFApp.MultiThreadedMessageLoop
+// property set to FALSE and using GTK2 require a custom build of CEF binaries
+// with use_gtk=false set via GN_DEFINES.
+
 // This is a demo with the simplest web browser you can build using CEF4Delphi and
 // it doesn't show any sign of progress like other web browsers do.
 

demos/Lazarus_Linux_GTK2/OSRExternalPumpBrowser/OSRExternalPumpBrowser.lpi

@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <CONFIG>
   <ProjectOptions>
-    <Version Value="11"/>
+    <Version Value="12"/>
     <General>
+      <Flags>
+        <CompatibilityMode Value="True"/>
+      </Flags>
       <SessionStorage Value="InProjectDir"/>
-      <MainUnit Value="0"/>
       <Title Value="OSRExternalPumpBrowser"/>
       <Scaled Value="True"/>
       <ResourceType Value="res"/>
@@ -23,7 +25,6 @@
     </PublishOptions>
     <RunParams>
       <FormatVersion Value="2"/>
-      <Modes Count="0"/>
     </RunParams>
     <RequiredPackages Count="2">
       <Item1>

demos/Lazarus_Linux_GTK2/OSRExternalPumpBrowser/uosrexternalpumpbrowser.lfm

@@ -12,7 +12,7 @@ object Form1: TForm1
   OnDestroy = FormDestroy
   OnHide = FormHide
   OnShow = FormShow
-  LCLVersion = '2.0.12.0'
+  LCLVersion = '2.2.2.0'
   object AddressPnl: TPanel
     Left = 0
     Height = 30

demos/Lazarus_Linux_GTK2/OSRExternalPumpBrowser/uosrexternalpumpbrowser.pas

@@ -130,6 +130,12 @@ implementation
 
 {$R *.lfm}
 
+// ATTENTION
+// =========
+// Since CEF 102 the Linux demos with the GlobalCEFApp.MultiThreadedMessageLoop
+// property set to FALSE and using GTK2 require a custom build of CEF binaries
+// with use_gtk=false set via GN_DEFINES.
+
 // This is a simple CEF browser in "off-screen rendering" mode (a.k.a OSR mode)
 // with a different executable for the Chromium subprocesses and an external
 // message pump

demos/Lazarus_Linux_GTK2/OSRExternalPumpBrowser2/uosrexternalpumpbrowser2.lfm

@@ -12,7 +12,7 @@ object Form1: TForm1
   OnDestroy = FormDestroy
   OnHide = FormHide
   OnShow = FormShow
-  LCLVersion = '2.2.0.4'
+  LCLVersion = '2.2.2.0'
   object AddressPnl: TPanel
     Left = 0
     Height = 30

demos/Lazarus_Linux_GTK2/OSRExternalPumpBrowser2/uosrexternalpumpbrowser2.pas

@@ -133,6 +133,12 @@ implementation
 
 {$R *.lfm}
 
+// ATTENTION
+// =========
+// Since CEF 102 the Linux demos with the GlobalCEFApp.MultiThreadedMessageLoop
+// property set to FALSE and using GTK2 require a custom build of CEF binaries
+// with use_gtk=false set via GN_DEFINES.
+
 // This demo uses a CEF browser in "off-screen rendering" mode (a.k.a OSR mode)
 // but instead of copying the raw bitmap information it uses an OpenGL texture
 // to accelerate drawing the contents.

demos/Lazarus_Linux_GTK2/TabbedBrowser2/TabbedBrowser2.lpi

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <CONFIG>
   <ProjectOptions>
-    <Version Value="11"/>
+    <Version Value="12"/>
     <PathDelim Value="\"/>
     <General>
       <Flags>
@@ -9,9 +9,9 @@
         <MainUnitHasCreateFormStatements Value="False"/>
         <MainUnitHasTitleStatement Value="False"/>
         <MainUnitHasScaledStatement Value="False"/>
+        <CompatibilityMode Value="True"/>
       </Flags>
       <SessionStorage Value="InProjectDir"/>
-      <MainUnit Value="0"/>
       <Title Value="TabbedBrowser2"/>
       <UseAppBundle Value="False"/>
       <ResourceType Value="res"/>
@@ -25,7 +25,6 @@
     </PublishOptions>
     <RunParams>
       <FormatVersion Value="2"/>
-      <Modes Count="0"/>
     </RunParams>
     <RequiredPackages Count="2">
       <Item1>
@@ -81,6 +80,9 @@
       </SyntaxOptions>
     </Parsing>
     <Linking>
+      <Debugging>
+        <DebugInfoType Value="dsDwarf2Set"/>
+      </Debugging>
       <Options>
         <Win32>
           <GraphicApplication Value="True"/>