MacKeyboard: Don't generate keypress for non-printable char

base/mac/mac_util.h

Index: base/mac/mac_util.h
diff --git a/base/mac/mac_util.h b/base/mac/mac_util.h
index a452a39bdd4077d13e078134873b0fa2bc5c19c4..1fc6a3d195f5294159a96259722b2d32a1e6904b 100644
--- a/base/mac/mac_util.h
+++ b/base/mac/mac_util.h
@@ -16,6 +16,7 @@
 #import <Foundation/Foundation.h>
 #else  // __OBJC__
 class NSImage;
+class NSString;
 #endif  // __OBJC__
 
 namespace base {
@@ -120,6 +121,9 @@ BASE_EXPORT bool WasLaunchedAsHiddenLoginItem();
 // an error, or true otherwise.
 BASE_EXPORT bool RemoveQuarantineAttribute(const FilePath& file_path);
 
+// Return true if 's' is empty or contains at least one printable character
+BASE_EXPORT bool StringIsPrintable(NSString* s);

[dtapuska, 2015/11/23 14:42:08]

This is too generic in the base..

Since you are only testing it inside the scope of the render_host_view_mac I'd
move it to an anonymous function

+
 // Run-time OS version checks. Use these instead of
 // base::SysInfo::OperatingSystemVersionNumbers. Prefer the "OrEarlier" and
 // "OrLater" variants to those that check for a specific version, unless you