More Dr. Memory suppressions:

tools/valgrind/drmemory/suppressions_full.txt

 # This file contains suppressions for the Dr.Memory tool, see
 # http://dev.chromium.org/developers/how-tos/using-drmemory
 #
 # This file should contain suppressions only for the reports happening
 # in the 'full' mode (drmemory_full).
 # For the reports that can happen in the light mode (a.k.a. drmemory_light),
 # please use suppressions.txt instead.
 
 ###############################################################
 # Known reports on the third party we have no control over.
@@ skipping 1683 matching lines @@
 blink_web.dll!blink::WebLocalFrameImpl::extendSelectionAndDelete
 content.dll!content::RenderFrameImpl::OnExtendSelectionAndDelete
 *!content::RenderViewImplTest_OnExtendSelectionAndDelete_Test::TestBody
 *!testing::internal::HandleExceptionsInMethodIfSupported<>
 
 UNINITIALIZED READ
 name=bug_398547
 system call NtWriteFile parameter #5
 KERNELBASE.dll!WriteFile
 KERNEL32.dll!WriteFile
-mojo_system_impl.dll!mojo::system::`anonymous namespace'::RawChannelWin::WriteNoLock
+mojo_system_impl.dll!mojo::edk::`anonymous namespace'::ChannelWin::WriteNoLock
 
 UNINITIALIZED READ
 name=bug_399842
 skia.dll!S32A_Opaque_BlitRow32_SSE4
 
 HANDLE LEAK
 name=bug_403544
 system call NtCreateSemaphore
 KERNELBASE.dll!CreateSemaphoreExW
 ...
@@ skipping 447 matching lines @@
 content.dll!content::ChildThreadImpl::Init
 content.dll!content::ChildThreadImpl::ChildThreadImpl
 content.dll!content::UtilityThreadImpl::UtilityThreadImpl
 content.dll!content::UtilityMain
 
 UNADDRESSABLE ACCESS
 name=bug_617740
 media.dll!mkvmuxer::Segment::WriteFramesAll
 media.dll!mkvmuxer::Segment::Finalize
 media.dll!media::WebmMuxer::~WebmMuxer
+
+UNADDRESSABLE ACCESS
+name=bug_618265
+...
+cc.dll!cc::ScrollTree::MaxScrollOffset
+cc.dll!cc::LayerImpl::MaxScrollOffset
+cc.dll!cc::LayerTreeImpl::TotalMaxScrollOffset
+cc.dll!cc::LayerTreeHostImpl::UpdateRootLayerStateForSynchronousInputHandler
+cc.dll!cc::LayerTreeHostImpl::AnimateInternal
+cc.dll!cc::LayerTreeHostImpl::Animate
+cc.dll!cc::ProxyImpl::WillBeginImplFrame