Don't close SRT bubble on deactivate.

TBR=noelutz
OWNER of chrome/browser/safe_browsing folder,
for trivial change of returning false instead of base class' true.
Being exercised already by other derived classes, e.g., ExtensionDisabledGlobalError

We will want to merge this to M39 once it gets added to Canary, hopefully tomorrow...
BUG=419049

Review URL: https://codereview.chromium.org/616143002

Cr-Commit-Position: refs/heads/master@{#297518}

chrome/browser/safe_browsing/srt_global_error_win.cc

@@ -107,6 +107,10 @@ void SRTGlobalError::BubbleViewCancelButtonPressed(Browser* browser) {
   DismissGlobalError();
 }
 
+bool SRTGlobalError::ShouldCloseOnDeactivate() const {
+  return false;
+}
+
 void SRTGlobalError::DismissGlobalError() {
   global_error_service_->RemoveGlobalError(this);
   delete this;

chrome/browser/safe_browsing/srt_global_error_win.h

@@ -38,6 +38,7 @@ class SRTGlobalError : public GlobalErrorWithStandardBubble,
   virtual void OnBubbleViewDidClose(Browser* browser) OVERRIDE;
   virtual void BubbleViewAcceptButtonPressed(Browser* browser) OVERRIDE;
   virtual void BubbleViewCancelButtonPressed(Browser* browser) OVERRIDE;
+  virtual bool ShouldCloseOnDeactivate() const OVERRIDE;
 
  private:
   // When the user took action, the GlobalError can be dismissed.