Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/renderer/renderer_main_platform_delegate_android.cc

Index: content/renderer/renderer_main_platform_delegate_android.cc
===================================================================
--- content/renderer/renderer_main_platform_delegate_android.cc	(revision 163290)
+++ content/renderer/renderer_main_platform_delegate_android.cc	(working copy)
@@ -5,8 +5,10 @@
 #include "content/renderer/renderer_main_platform_delegate.h"
 #include "base/logging.h"
 
+namespace content {
+
 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
-    const content::MainFunctionParams& parameters)
+    const MainFunctionParams& parameters)
     : parameters_(parameters) {
 }
 
@@ -29,3 +31,5 @@
 
 void RendererMainPlatformDelegate::RunSandboxTests() {
 }
+
+}  // namespace content