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

content/common/gpu/gpu_memory_manager_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/gpu_command_buffer_stub.h"
 #include "content/common/gpu/gpu_memory_allocation.h"
 #include "content/common/gpu/gpu_memory_manager.h"
 #include "ui/gfx/size_conversions.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace content {
+
 class FakeCommandBufferStub : public GpuCommandBufferStubBase {
  public:
   MemoryManagerState memory_manager_state_;
   GpuMemoryAllocation allocation_;
   gfx::Size size_;
 
   FakeCommandBufferStub()
       : memory_manager_state_(0, false, base::TimeTicks()) {
     memory_manager_state_.client_has_memory_allocation_changed_callback = true;
   }
@@ skipping 653 matching lines @@
   EXPECT_FALSE(stats[&stub1].visible);
   EXPECT_FALSE(stats[&stub2].visible);
   EXPECT_TRUE(stats[&stub3].visible);
   EXPECT_EQ(stub1allocation4, 0ul);
   EXPECT_GE(stub2allocation4, 0ul);
   EXPECT_GT(stub3allocation4, 0ul);
   if (compositors_get_bonus_allocation &&
       stub3allocation3 != GetMaximumTabAllocation())
     EXPECT_GT(stub3allocation4, stub3allocation3);
 }
+
+}  // namespace content