Specify dependences correctly when building mac tools for iOS.

breakpad/breakpad.gyp

Index: breakpad/breakpad.gyp
diff --git a/breakpad/breakpad.gyp b/breakpad/breakpad.gyp
index b121ceda1bb21f2edd47c0f3c0cc8f07dacd0e6d..e8114f440530cb1c0d0009e02be1b53ec07c6d9e 100644
--- a/breakpad/breakpad.gyp
+++ b/breakpad/breakpad.gyp
@@ -718,12 +718,24 @@
       ],
     }],
     [ 'OS=="ios"', {
+      'variables': {
+        'ninja_output_dir': 'ninja-breakpad',
+        'ninja_product_dir':
+          '<(DEPTH)/xcodebuild/<(ninja_output_dir)/<(CONFIGURATION_NAME)',
+      },
+      # Generation is done via two actions: (1) compiling the executable with
+      # ninja, and (2) copying the executable into a location that is shared
+      # with other projects. These actions are separated into two targets in
+      # order to be able to specify that the second action should not run until
+      # the first action finishes (since the ordering of multiple actions in
+      # one target is defined only by inputs and outputs, and it's impossible
+      # to set correct inputs for the ninja build, so setting all the inputs
+      # and outputs isn't an option).
       'targets': [
         {
-          'target_name': 'breakpad_utilities',
+          'target_name': 'compile_breakpad_utilities',
           'type': 'none',
           'variables': {
-            'ninja_output_dir': 'ninja-breakpad',
             # Gyp to rerun
             're_run_targets': [
               'breakpad/breakpad.gyp',
@@ -742,6 +754,15 @@
               ],
               'message': 'Generating the breakpad executables',
             },
+          ],
+        },
+        {
+          'target_name': 'breakpad_utilities',
+          'type': 'none',
+          'dependencies': [
+            'compile_breakpad_utilities',
+          ],
+          'actions': [
             {
               'action_name': 'copy dump_syms',
               'inputs': [